carrie budoff brown, thanks to both of you. have a didn't weekend. >>> eyewitness to tragedy. one of the nurses in the dallas emergency room shares her story. what was it like to be there as doctors desperately worked to save jfk's life. her story next. [ male announcer ] laura's heart attack didn't come with a warning. today her doctor has her on a bayer aspirin regimen to help reduce the risk of another one. if you've had a heart attack, be sure to talk to your doctor before you begin an aspirin regimen. ♪ hark how the bells, sweet silver bells ♪ ♪ all seem to say throw care away ♪ ♪ from everywhere, filling the air ♪ [ female announcer ] chex party mix. easy 15-minute homemade recipes you just pop in a microwave. like caramel chocolate drizzles. happier holidays. chex party mix. you really love, what would you do?" ♪ [ woman ] i'd be a writer. [ man ] i'd be a baker. [ woman ] i wanna be a pie maker. [ man ] i wanna be a pilot. [ woman ] i'd be an architect. what if i told you someone could pay you and what if that person were you? ♪ when you think about it,